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State Partl. Name

Level Legend: - - - - - - - - - Below Recommended Low Runnable - - - - - - - - High Runnable Above Recommended - - - - - - - - - Unknown Unknown
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River Name/Section Class Level running? Updated
Anacostia, Northwest Branch [MD] US Rte 29 to Riggs Road I-III(V+) 28 cfs
-1 cfs/hr
L4-
Below Recom.
01h48m
Antietam Creek [MD] 1) Upper: Oak Ridge Dr. to Hwy.68 (Devils Backbone Park) I-II 3.96 ft
-0.03 ft/hr
R4-
Runnable
02h17m
Antietam Creek [MD] 2) Hwy 68 to Hwy 34 I-II 3.96 ft
-0.03 ft/hr
R5-
Runnable
02h17m
Antietam Creek [MD] 3) Hwy.34 to Potomac River I-II 3.96 ft
-0.03 ft/hr
R5-
Runnable
02h17m
Bear Creek [MD] U.S. 219 to Youghiogheny River at Friendsville IV 295 cfs
-9 cfs/hr
R3-
Runnable
02h03m
Beaver Creek [MD] Beaver Creek Park N Ride (I-70) to Alternate Rt. 40 I(II) 3.96 ft
-0.03 ft/hr
L0-
Below Recom.
02h17m
Bennett Creek [MD] MD Route 355 to Monocacy River I-II 137 cfs
0 cfs/hr
R0-
Lower Runnable
01h48m
Big Elk Creek [MD] PA Route 341 to Elkton I-II 178 cfs
-11 cfs/hr
R0-
Lower Runnable
01h48m
Broad Creek [MD] MD Route 136 to MD Route 623 I-II 290 cfs
0 cfs/hr
L0-
Below Recom.
01h18m
Cabin John Creek [MD] River Road to Potomac II-III 102 cfs
-2 cfs/hr
L8-
Below Recom.
01h18m
Casselman, N. Branch [MD] Dung Hill Road to Maryland Route 495 I-III 2.34 ft
-0.02 ft/hr
R1-
Lower Runnable
02h03m
Casselman [MD] MD Route 495 to Salisbury, Pennsylvania I-II 399 cfs
-10 cfs/hr
R4-
Runnable
02h03m
Catoctin Creek [MD] US 40 to Potomac River I-II 2.54 ft
-0.01 ft/hr
R3-
Runnable
01h48m
Conococheague Creek [MD] Wilson Bridge (US 40) to Williamsport, MD Boat Ramp I 4.79 ft
-0.04 ft/hr
R5-
Runnable
01h48m
Conowingo Creek [MD] Oakwood to Susquehanna River IV-V 358 cfs
+ 23 cfs/hr
L0-
Below Recom.
00h48m
Crabtree Creek [MD] Swanton, MD to Savage Reservoir III-IV+ 579 cfs
-40 cfs/hr
R0-
Lower Runnable
01h18m
Deep Creek [MD] Dam to Youghiogheny River V n/a

Deer Creek [MD] 1. Bond Road to MD 23 I 3.01 ft
0.00 ft/hr
R0-
Lower Runnable
01h18m
Deer Creek [MD] 2. Harford Creamery Rd. to Eden Mill Park boat ramp I 3.01 ft
0.00 ft/hr
R4-
Runnable
01h18m
Deer Creek [MD] 3. Eden Mill Dam to Rocks State Park I-II(III) 3.01 ft
0.00 ft/hr
R4-
Runnable
01h18m
Deer Creek [MD] 4. Rocks State Park to US 1, Benjamin Bridge Access I-II(III) 3.01 ft
0.00 ft/hr
R4-
Runnable
01h18m
Deer Creek [MD] 5. US Rt 1, Benjamin Bridge Access to MD 136 I-II 3.01 ft
0.00 ft/hr
R4-
Runnable
01h18m
Deer Creek [MD] 6. MD 136 to Susquehanna River I-II 3.01 ft
0.00 ft/hr
R4-
Runnable
01h18m
Evitts Creek [MD] 1. Lake Gordon Dam (PA) to Maryland Route 144 (MD) I-III 4.65 ft
-0.03 ft/hr
L4-
Below Recom.
02h03m
Evitts Creek [MD] 2. MD 144 to MD 51 I-II 4.65 ft
-0.03 ft/hr
L4-
Below Recom.
02h03m
Fifteen Mile Creek [MD] US Route 40 to Potomac River I-II(III) 2.54 ft
-0.02 ft/hr
R0-
Lower Runnable
01h33m
Flintstone Creek [MD] Flintstone Creek Road to Town Creek I-III 614 cfs
-10 cfs/hr
R0-
Lower Runnable
02h03m
Georges Creek [MD] Maryland Rte. 36 (Midland) to N. Branch Potomac River III-IV 5.24 ft
-0.02 ft/hr
R4-
Runnable
01h48m
Gunpowder Falls [MD] 1 - Graves Run Rd to Prettyboy Reservoir (Gunpowder Road) II+ 38 cfs
-1 cfs/hr
L8-
Below Recom.
02h03m
Gunpowder Falls [MD] 2 - Prettyboy Dam to Falls Road I-III 263 cfs
0 cfs/hr
R5-
Runnable
01h33m
Gunpowder Falls [MD] 3 - Masemore Road to Monkton Road I-II 372 cfs
0 cfs/hr
R4-
Runnable
01h20m
Gunpowder Falls [MD] 4. Monkton Road to Phoenix I 480 cfs
0 cfs/hr
R4-
Runnable
01h18m
Gunpowder Falls [MD] 5 - Lower Loch Raven Dam to Route 1 I-II ~ 651 cfs
0 cfs/hr
R4-
Runnable
01h20m
Gunpowder Falls [MD] 6 - Route 1 to U.S.40 II-III ~ 659 cfs
0 cfs/hr
R4-
Runnable
01h20m
Gwynns Falls [MD] 1) Villa Nova to Woodlawn II 48 cfs
-1 cfs/hr
L6-
Below Recom.
02h03m
Gwynns Falls [MD] 2) Gwynn Oak Ave. to Wilkens Ave (US 1) II-III(IV) 48 cfs
-1 cfs/hr
L6-
Below Recom.
02h03m
Herring Run [MD] Echodale Ave to US 40 II-III 4 cfs
0 cfs/hr
L9-
Below Recom.
01h13m
Hunting Creek [MD] Catoctin Hollow Road to Frank Bentz Lake III-IV+(V) 217 cfs
-4 cfs/hr
L8-
Below Recom.
01h48m
Jennings Run [MD] Barrelville to Wills Creek III+ 1390 cfs
-40 cfs/hr
R2-
Lower Runnable
00h18m
Jones Falls [MD] Lake Roland to Round Falls I-III n/a

Laurel Run [MD] Laurel Run IV 4.84 ft
-0.02 ft/hr
L4-
Below Recom.
01h18m
Little Falls of the Gunpowder [MD] Parkton (Maryland Route 45) to Gunpowder Falls I-III 162 cfs
-2 cfs/hr
L8-
Below Recom.
01h18m
Little Gunpowder Falls [MD] 1) Bottom Rd @ Laurel Brook to Jerusalem Mill (Jerusalem Rd.... I-II 64 cfs
-1 cfs/hr
L0-
Below Recom.
01h18m
Little Gunpowder Falls [MD] 2) Jerusalem Mill (Jerusalem Rd.) to U.S. Route 40 II-III 64 cfs
-1 cfs/hr
L0-
Below Recom.
01h18m
Little Patuxent [MD] US Route 29 (Columbia) to US Route 1 I-IV 218 cfs
-8 cfs/hr
L8-
Below Recom.
01h18m
Little Seneca Creek [MD] Boyds to Darnestown II(III) 186 cfs
+ 11 cfs/hr
L0-
Below Recom.
01h43m
Long Green Creek [MD] Glen Arm Rd. to Gunpowder Falls IV 20 cfs
0 cfs/hr
L7-
Below Recom.
01h18m
Middle Creek (Catoctin Creek trib.) [MD] Wolfsville to Myersville II-III(V) 2.54 ft
-0.01 ft/hr
L2-
Below Recom.
01h48m
Middle Creek (Toms Creek trib.) [MD] T318 to Harney Road II+ 223 cfs
-15 cfs/hr
L2-
Below Recom.
02h03m
Middle Patuxent [MD] Carroll Mill Road to Savage Mill I-II(IV) 4.18 ft
-0.03 ft/hr
L0-
Below Recom.
01h18m
Mill Run [MD] Pigs Ear Road to Yough River Lake III-IV+ 73 cfs
-3 cfs/hr
L2-
Below Recom.
01h18m
Monocacy River [MD] 1. Creagerstown Park to Devilbiss Bridge Park I 6.17 ft
-0.11 ft/hr
H4-
Above Recom.
02h03m
Monocacy River [MD] 2. Devilbiss Bridge Park to Riverbend Park I 6.17 ft
-0.11 ft/hr
H4-
Above Recom.
02h03m
Monocacy River [MD] 3. Pinecliff Park to Buckeystown Park I(II) 6.17 ft
-0.11 ft/hr
H4-
Above Recom.
02h03m
Monocacy River [MD] 4. Buckeystown Park to Park Mills Road I(II) 6.17 ft
-0.11 ft/hr
H4-
Above Recom.
02h03m
Muddy Creek [MD] Cranesville Swamp Nature Preserve (Lake Ford Road) to Youghi... I-III(V) 73 cfs
-3 cfs/hr
L6-
Below Recom.
01h18m
Northeast Creek [MD] below covered bridge on Route 272 V 178 cfs
-11 cfs/hr
L9-
Below Recom.
01h48m
Octoraro Creek [MD] New Bridge Road to Richardsmere II 358 cfs
+ 23 cfs/hr
R3-
Runnable
00h48m
Olmsted Island Creek [MD] Clara Barton Parkway to C&O Canal V n/a

Owens Creek [MD] 1) Lantz to Roddy Covered Bridge II-IV 217 cfs
-4 cfs/hr
L8-
Below Recom.
01h48m
Owens Creek [MD] 2) Rocky Ridge Road (Hwy.77) to Monocacy River I-II 217 cfs
-4 cfs/hr
L5-
Below Recom.
01h48m
Patapsco, S. Branch [MD] 1. Woodbine to Henryton Rd. II+(III) 235 cfs
-16 cfs/hr
L9-
Below Recom.
01h35m
Patapsco, S. Branch [MD] 2. Marriottsville Rd to Woodstock I-III(IV) 494 cfs
0 cfs/hr
R4-
Runnable
01h20m
Patapsco [MD] Woodstock to Elkridge I-III 749 cfs
0 cfs/hr
R5-
Runnable
01h18m
Piney Run [MD] Arrington Road to Marriottsville I-III(IV) 43 cfs
0 cfs/hr
L7-
Below Recom.
01h33m
Potomac, North Branch [MD] 1. Henry, WV to Gormania, WV I-III 4.84 ft
-0.02 ft/hr
L8-
Below Recom.
01h18m
Potomac, North Branch [MD] 2. Gormania, WV to Kitzmiller, MD III-IV 4.84 ft
-0.02 ft/hr
R5-
Runnable
01h18m
Potomac, North Branch [MD] 3. Kitzmiller, MD to Jennings Randolph Lake II-III 4.84 ft
-0.02 ft/hr
R5-
Runnable
01h18m
Potomac, North Branch [MD] 4. Barnum, WV to Bloomington, MD II(III) 1560 cfs
0 cfs/hr
R6-
Runnable
01h18m
Potomac, North Branch [MD] 5. Bloomington, MD to Keyser, WV I-II 2450 cfs
+ 40 cfs/hr
R7-
Upper Runnable
01h33m
Potomac, North Branch [MD] 6. Black Oak River Access Nr. McCoole, MD to Pinto, MD I 2450 cfs
+ 40 cfs/hr
R7-
Upper Runnable
01h33m
Potomac, North Branch [MD] 7. Pinto, MD to Upper Potomac Industrial Park (upstream of C... I 2450 cfs
+ 40 cfs/hr
R7-
Upper Runnable
01h33m
Potomac [MD] 0.1 Oldtown Toll Bridge to Paw Paw Tunnel Campground I 15.80 ft
-0.13 ft/hr
H9-
Above Recom.
01h18m
Potomac [MD] 0.2 Paw Paw Tunnel Campground to Fifteen Mile Creek Boat Lan... I 15.80 ft
-1.22 ft/hr
H9-
Above Recom.
01h18m
Potomac [MD] 0.3 Fifteen Mile Creek Boat Ramp to Hancock, MD I 14.00 ft
-0.12 ft/hr
H9-
Above Recom.
01h18m
Potomac [MD] 0.4 Big Pool Campground to Williamsport MD I 14.00 ft
-0.12 ft/hr
H9-
Above Recom.
01h18m
Potomac [MD] 0.5 Dam # 4 to Shepherdstown WV I 14.00 ft
-0.12 ft/hr
H9-
Above Recom.
01h18m
Potomac [MD] 0.6 Shepherdstown, WV to Dargans Bend Boat Ramp I 14.00 ft
-0.12 ft/hr
H9-
Above Recom.
01h18m
Potomac [MD] 0.7 Dargans Bend Boat Ramp to Sandy Hook/Potoma Wayside II 14.00 ft
-0.12 ft/hr
H9-
Above Recom.
01h18m
Potomac [MD] 0.8 Sandy Hook/Potoma Wayside to Point of Rocks MD I-II 14.00 ft
-0.12 ft/hr
H9-
Above Recom.
01h18m
Potomac [MD] 0.9 Point of Rocks to Mouth of Monocacy I 6.81 ft
+0.11 ft/hr
H0-
Above Recom.
01h48m
Potomac [MD] 1. Mouth of Monocacy to Riley's Lock Boat Ramp I 6.81 ft
+0.11 ft/hr
H0-
Above Recom.
01h48m
Potomac [MD] 2. Violette's Lock to Pennyfield Lock I-II 6.81 ft
+0.11 ft/hr
H0-
Above Recom.
01h48m
Potomac [MD] 3. Great Falls (Center Lines) V+ 6.81 ft
+0.11 ft/hr
H9-
Above Recom.
01h48m
Potomac [MD] 3. Great Falls (Fish Ladder) IV-V(V+) 6.81 ft
+0.11 ft/hr
H9-
Above Recom.
01h48m
Potomac [MD] 3. Great Falls (MD Lines) V+ 6.81 ft
+0.11 ft/hr
H7-
Above Recom.
01h48m
Potomac [MD] 3. Great Falls (VA Lines) V 6.81 ft
+0.11 ft/hr
H9-
Above Recom.
01h48m
Potomac [MD] 3. Through Great Falls (several runs) V+ 6.81 ft
+0.11 ft/hr
H9-
Above Recom.
01h48m
Potomac [MD] 4. Sandy Beach/O-Deck to Anglers Inn II-III(IV) 6.81 ft
+0.11 ft/hr
H3-
Above Recom.
01h48m
Potomac [MD] 5. Anglers Inn to Lock 10 II 6.81 ft
+0.11 ft/hr
H0-
Above Recom.
01h48m
Potomac [MD] 6. Lock 10 to Sycamore Island I 6.81 ft
+0.11 ft/hr
H0-
Above Recom.
01h48m
Potomac [MD] 7. Little Falls II-III(IV) 6.81 ft
+0.11 ft/hr
H2-
Above Recom.
01h48m
Rock Creek [MD] 1. Rockville to Military Road I(II) 102 cfs
-2 cfs/hr
L0-
Below Recom.
01h18m
Rock Creek [MD] 2. Military Road to Potomac River in D.C. I-III 102 cfs
-2 cfs/hr
L0-
Below Recom.
01h18m
Savage [MD] 1. Avilton Lonaconing Road to Head of Savage Reservoir II(IV) 579 cfs
-40 cfs/hr
R4-
Runnable
01h18m
Savage [MD] 2. Savage Dam to North Branch Potomac River III-IV 879 cfs
+ 248 cfs/hr
R5-
Runnable
01h18m
Seneca Creek [MD] Black Rock Mill to Riley's Lock Boat Ramp I-II 186 cfs
+ 11 cfs/hr
R2-
Lower Runnable
01h43m
Sideling Hill Creek [MD] Purcell Penn.(sr 2011)to the Potomac river I-II 2.54 ft
-0.02 ft/hr
R4-
Runnable
01h33m
Town Creek [MD] I-68 to Potomac River I 614 cfs
-10 cfs/hr
R4-
Runnable
02h03m
Wills Creek [MD] Ellerslie to Eckhart Junction I-II 1390 cfs
-40 cfs/hr
R6-
Runnable
00h18m
Winters Run [MD] Pleasantville Road to Maryland Route 7 I-II 80 cfs
0 cfs/hr
L0-
Below Recom.
01h18m
Youghiogheny [MD] 0. US Route 50 to Millers Run I-II 73 cfs
-3 cfs/hr
R0-
Lower Runnable
01h18m
Youghiogheny [MD] 1. Tippy-Top IV 679 cfs
-17 cfs/hr
R5-
Runnable
01h18m
Youghiogheny [MD] 2. Top IV-V 679 cfs
-17 cfs/hr
R5-
Runnable
01h18m
Youghiogheny [MD] 3. Upper IV-V 3.78 ft
-0.02 ft/hr
R8-
Upper Runnable
01h48m
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